HYDROCHARITACEAE. 



ELODEA L. C Rich 



Elodea guyanensis. L. C. Rich, in Mem. de I'Inst. de France. II. (1811) 



p, 75 t. I. 

 Lower Surinam River near plant. Jagtlsst : Focke 602 in ditches fl. 



Octob. [= Udora suriuamensis Miq. in Linnaea XVIII (1844) p. 241. 

 Paramaribo: in ditches: Versteeg 498 (fl. June). 

 Upper Tapanaboni River: Versteeg 923 (fl. Octob.) 



HYDROMYSTRIA Q. F. W. Meyer 



Hydromystria stolonifera Q. F. W. Mey. Prim Fl. Esseq. 152. 

 Trianea bogotensis Karstett. 

 Surinam River: Versteeg 497 (fl. June.) 

 All tropical America. 



